"I was just kind of taken aback. I didn't know why the guy thought I needed to go to church or why someone would leave something like that. I've received bible pamphlets before but never in such a deceptive way," Garret told INSIDE EDITION.

Garret works at Mulvane DK, a local restaurant in the small town of Mulvane, Kansas. He has been waiting tables for about a year, and he told INSIDE EDITION that $20 would have been a phenomenal tip for him to get.

He added that the customer has returned to the restaurant and each time he dines there, he leaves the same disguised bible pamphlet instead of a real tip.